Examples of reversible reactions

To repeat, a chemical reaction in which substances react together to produce resultants and the resultants in turn react with one another to produce the original substances is known as reversible chemical reaction. For example, decomposition followed by combination reactions of calcium carbonate.

Examples of Reverse reaction

When we heat calcium carbonate (CaCO3) in a closed vessel the evolved carbon dioxide will not go out; it reacts with another product calcium oxide (CaO) to give the calcium carbonate (CaCO3) in reverse. The direction of reaction is affected by like reaction temperature,concentration of reactants, stability of products,etc

When the decomposition reaction is carried out in an open condition, evolved carbon dioxide gas escapes. Therefore, uniting of CO2 gas with calcium oxide is not observed resulting in an irreversible reaction.

Rate of the Reverse Reaction

Reversible reactions do not proceed to completion in any one direction. Usually the rate of the reverse reaction is slower than that of the forward reaction.